53 research outputs found
Superconducting electromagnets for large wind tunnel magnetic suspension and balance systems
Full text linkEffect of light quality (blue, red) and fluence rate on the synthesis of pigments and pigment-proteins in maize and black pine mesophyll chloroplasts
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Light-quality and irradiance-level control of light-harvesting complex of photosystem 2 in maize mesophyll cells. Evidence for a low fluence-rate threshold in blue-light reduction of mRNA and protein
No full textCorn chloroplast development in weak fluence rate red light and in weak fluence rate red plus far red light
No full textChloroplast structure in normal and pigment-deficient soybeans grown in continuous red or far-red light
No full textLight-quality and irradiance effects on pigments, light-harvesting proteins and Rubisco activity in a chlorophyll- and light- harvesting-deficient soybean mutant
No full textSupercritical CO2 Extraction of Carotene and Lutein from Leaf Protein Concentrates
No full textSupercritical fluid carbon dioxide was used to extract carotene and lutein from leaf protein concentrate (LPC). Extractions were performed using prcssurcs of lo-70 MPa at 40°C and CO? flow rates of 5-6 L/min. Over 90% of the carotene contained in LPC was removed at extraction pressures in excess of 30 MPa. Removal of lutein from LPC required higher extraction pressures (70 MPa) and gas volumes to attain a 70% recovery level. Experimental results were rationalized with the aid of solubility parameter theory. The described process offers the possibility of obtaining a selective extraction of natural colorants, free of solvent residuals, which can be used as food dyes
Supercritical CO2 Extraction of Carotene and Lutein from Leaf Protein Concentrates
No full textSupercritical fluid carbon dioxide was used to extract carotene and lutein from leaf protein concentrate (LPC). Extractions were performed using pressures of 10-70 MPa at 40\ub0C and CO2 flow rates of 5-6 L/min. Over 90% of the carotene contained in LPC was removed at extraction pressures in excess of 30 MPa. Removal of lutein from LPC required higher extraction pressures (70 MPa) and gas volumes to attain a 70% recovery level. Experimental results were rationalized with the aid of solubility parameter theory. The described process offers the possibility of obtaining a selective extraction of natural colorants, free of solvent residuals, which can be used as food dyes
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